US4042252AExpiredUtility

Inflatable spherical vehicular device

Individually held — no corporate assignee on recordPriority: Aug 13, 1975Filed: Aug 13, 1975Granted: Aug 16, 1977
Est. expiryAug 13, 1995(expired)· nominal 20-yr term from priority
B60F 3/0069
69
PatentIndex Score
23
Cited by
10
References
2
Claims

Abstract

An inflatable spherical device is disclosed made of two hemispherical shells or sections that are fastened together by a quick disengageable means, such as a zipper. Each hemispherical shell is made of an outer flexible skin and an inner flexible skin, concentrically spaced apart and having an annular circular flat member bonded by its outer periphery to the periphery of the outer skin and by its inner periphery to the periphery of the inner skin, forming a hemispherical air-tight compartment. Means are provided to inflate each shell. To maintain the outer and inner skins evenly spaced apart and to provide ventilation through the shells, a plurality of flexible wall tubes are disposed between the outer and inner skins. The respective ends of the tubes are bonded to suitable apertures in each of the outer and inner skins.

Claims

exact text as granted — not AI-modified
I claim: 
     
       1. A spherical device comprising: a pair of hemispherical sections and each of said sections comprising: an outer flexible skin;   an inner flexible skin;   a flat annular member bonded to the periphery of both said outer skin and said inner skin;   said outer skin having a plurality of apertures;   said inner skin having a plurality of apertures, each of which is radially aligned with respective ones of said apertures in said outer skin;   a plurality of flexible tubes, each of which is respectively bonded to one aperture of said outer skin and to the radially aligned aperture of said inner skin;   a zipper means releasably fastening said hemispherical sections together so that a person may have access to the interior.     
     
     
       2. The device of claim 1 wherein: each hemispherical section is made of two airtight quadrants.

Join the waitlist — get patent alerts

Track US4042252A — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.